code: def __del__(self):
      self.gpu_policy.stop()
  
file_path: turicreate/src/python/turicreate/toolkits/_image_feature_extractor.py
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  from ._pre_trained_models import _get_cache_dir
  from turicreate._deps.minimal_package import _minimal_package_import_check
  import turicreate.toolkits._tf_utils
label_desc: Use image node_id 2 for calling the TensorFlowFeatureExtractor obj's underlying member method code with example usage: obj.__del__() without return types